External Monitor Problems - Lenovo ThinkPad Yoga 14 User Manual

Solution: If you have modified a partition on your hard disk drive or hybrid drive by using partition
software, information about that partition, or the master boot record might have been destroyed.
1. Turn off the computer, and then turn it on again.
2. If you still see only the pointer on the screen, do the following:
– If you have used the partition software, examine the partition on the hard disk drive or hybrid drive
by using the software, and recover the partition if required.
– If your system is installed with the Windows 8.1 operating system, use either the Remove
everything and reinstall Windows function or the recovery discs to restore the system to the
factory state.
If the problem persists, have the computer serviced.

External monitor problems

• Problem: The external monitor is blank.
Solution: To bring up the image, press the display mode-switching key
monitor. If the problem persists, do the following:
1. Connect the external monitor to another computer to ensure that it works.
2. Reconnect the external monitor to your computer.
3. Refer to the manual shipped with the external monitor to check the resolutions and refresh rates that
are supported.
– If the external monitor supports the same resolution as the computer display or a higher resolution,
view output on the external monitor or on both the external monitor and the computer display.
– If the external monitor supports a lower resolution than the computer display, view output on the
external monitor only. (If you view output on both the computer display and the external monitor,
the external monitor screen will be blank or distorted.)
• Problem: You cannot set a higher resolution than the present one on your external monitor.
Solution: Make sure that the monitor type and other information is correct. If necessary, update the
monitor driver. See "Using an external display" on page 50.
• Problem: The screen is unreadable or distorted.
Solution: Ensure that:
– The monitor information is correct and the appropriate monitor type is selected. Refer to the solution
to the above problem.
– Ensure that an appropriate refresh rate is selected by doing the following:
1. Connect the external monitor to the monitor connector, and then connect the monitor to an
electrical outlet.
2. Turn on the external monitor and the computer.
3. Right-click on the desktop, and click Screen resolution.
Note: If your computer cannot detect the external monitor, click the Detect button.
4. Click the icon for the desired monitor (the Monitor-2 icon is for the external monitor).
5. Click Advanced Settings.
6. Click the Monitor tab.
7. Select the correct screen refresh rate.
and select the desired
.
Chapter 8 Troubleshooting computer problems
107